20310020320 has 48 divisors (see below), whose sum is σ = 48560556240. Its totient is φ = 8026123264.

The previous prime is 20310020287. The next prime is 20310020351. The reversal of 20310020320 is 2302001302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20310020320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751405 + ... + 777964.

It is an arithmetic number, because the mean of its divisors is an integer number (1011678255).

Almost surely, 2^20310020320 is an apocalyptic number.

20310020320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310020320 is an abundant number, since it is smaller than the sum of its proper divisors (28250535920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310020320 is a wasteful number, since it uses less digits than its factorization.

20310020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529467 (or 1529459 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20310020320 its reverse (2302001302), we get a palindrome (22612021622).

The spelling of 20310020320 in words is "twenty billion, three hundred ten million, twenty thousand, three hundred twenty".